Scouring chamber for metal-scouring machines



June 20, 1944.

IIIIIIIIIIN' y a C. A. DREISBACH l SCOURING-ACHAMBER FOR METAL-SCOURING MACHINES Filed Jan. 22. 1943 2 Sheets-Sheet l v Jyne 20, 1944.

v SCOURING-CHAMBER FOR METAL-SCOURING MACHINES c. A.y DRElsBAcH Fi'led Jan. 22, 1943 2 Sheets-Sheet 2 kil, y l

Patented `lune 20, 1944 :LUNr-rso vSTATES Pi..rE-1W oifl-l-cfr.

'SCOURING 'CHAMBER FOR METAL-SUCUR- r'INGll/IACHBES Charles A. Dreisbach, Yonkers, N. Y., assigner to Standard Radial Blast Corporation, Yonkers, u N. Y., -acorporation of New York application 'January 22, 1943, 1 serial No. 473,150 fzjolaims. (o1. 51-8) "f This 1 invention relates Jto improvements `in "scouring-chambers fand more `particularly lto scouring-chambers 'for fmetal-scouring'- machines vand the 1 like, `designed for 4scouring lto *de-scale, "clean, or Athe like, the surfaces of metal strips, sheets, wire, rods, tubing fand so forth, which rare'fordinarily lied `longitudinally ythrough the scouring-chamber. Y One Aobject o'fthisf invention-islto improve the construction set for-th Linfmyvlatent No.'1`,fl53,883, granted April 8,1930.

. r `Another .object of .this :invention-.is to provide an improved scouring-.chamber which will fhave .a tmoreneiiicientand moreluniform scouring action.

"With the above land other objects 1in view, as ,Will appear vto'those vskilled in the art from 'the .presentrdisclosura this invention includes all features in ithe saidlidisclosure Vwhich 4are 'novel-.fever `the prior art.

t L :Intheidescription and.Gianna-the various parts and steps are identified byspecic terms for con- -.-venience, but -theyiareintended to be a'sfgeneric fintheir application as the priorart will permit.

In the laccompanying drawings forming part of thepresent disclosure, 'in which certain ways -of carrying'out the invention are shown .for illustrative purposes:

Fig. l is a top plan view illustrating one embodimentmad'eiin accordancewith the present invention;

Fig. 2 is a front elevation of Fig. 1;

Fig. 3 is a cross-sectional view on line 3-3 of Fig. 2;

Fig. 4 is a broken longitudinal sectional view on line 4--4 of Fig. 3;

Fig. 5 is a perspective view of one of the scouring-chamber plates or members;

Fig. 6 is a sectional view on line 6-6 of Fig. 5; and

Fig. 7 is a fragmental View similar to Fig. 4 of a modified construction.

Referring to Figs. 1 to 6 of the drawings showing the particular form of the invention chosen for illustration therein, thescouring-chamber I0 is mainly formed by a plurality of respective complemental upper and lower scouring-chamber plates I I and I2 clamped together against gaskets I3 of soft rubber or other suitable material to render the joints airtight. Soft rubber gaskets are also placed between the adjacent ends of successive plates II and I2, and between the plates II, I2 and the head 34, and between the head 34 and the mixing-chamber 35, to render the joints airtight. The inner faces I4 and I5 of the respective plates II and I2I with the inner side-faces I6 ing-passage I'I.

of theplates -I-I yand l2, define the scouring-passage II. The 'faces `I4 and I5 are of lundulating or undulated form to` respectively `provide, inclined abrasive deecting-'su-rfaces I8 and I-S, which serve'to deflect the granular abrasive material such, for example, as crushed chilled-shot, or other suitable abrasive, toward the ycomplementary scouring-chamber plate, -andhence `the abrasive is deflected toward the respective opposite surfaces Aof metal wires, strips, northe like 2IJ which are fed longitudinally through the scour- 'Ihef complemental scouring-chamberA plates I`I and I2 are clamped together Vby any suitable clamping-means such, for example, as the plurality of clamping-assemblies -2I, each of which includes a base clamp-'member 22 and an 4upper -clamp-member Y23 -pivoted thereto at :.24 and being -forced against the closureeplate 25 by means of fa screw 26 carried in a clamp-arm 2`I pivoted at 28 to the base-member22, the closure-plate 25 engaging against gaskets 29 to provide an 'airtight space 30 -leading 'from 'an air-inlet pipe `3| .to the air-inletfopenings or nozzles'32. Auxiliary clamps each formed of a bolt 43 and two opposed clips 44-44 are preferably ialsoused yto clamp :thelpl'ates IIand I2 together.

vThe various clamp-bases 22 imay be mounted An air-'andabrasive head 34 interconnects the scouringchamber I0 with van air-and-abrasive mixingchamber 35 that is well known to those skilled in the art, and air or other gaseous fluid mixed with a granular abrasive is caused to pass inward through the tapered throat 3G of the head 34 and into and through the scouring-passage I1 and out the end thereof in a way that is well known to those skilled in the art. The wires, strips or other metal elements 20 may be continuously passed endwise in either direction through the machine by being pulled therethrough continuously by suitable means well known to those skilled in the art. The air and/ or granular abrasive in its passage through the scouring-passage acts to buoy up the metal I1 that is being scoured so that the latter may be said to more or less float Without substantial contact against either the upper or lower faces or walls of the scouring-passage.

Each air-inlet pipe 3| connects with an airinlet hose 31 which, in turn, connects to a main air-pipe or manifold 38 to supply air under pressure down through the lead-in pipes 3I to the air-openings or nozzles 32. Control-valves 45 are employed so the volume or pressure of air to each air space 30 can be individually regulated. It will be observed that each pair of nozzles 32 at a given location occupies substantially less total width than the Width of the scouring-passage, thus causing the air, which is directed in a direction generally longitudinal of the scouring-pase sage, to enter the scouring-chamber at a relatively-high velocity. A greater or lesser number of nozzles may be employed at the Various locations, depending on the Width or shape of th scouring-passage l1.

By having the air-inlet openings or nozzles V32 arranged at each of a plurality of spaced-apart` L locations along the scouring-passage Il,` a greatly-improved efficiency of scouring, or cleaning off the work is obtained, both as to speed of accom'- plishing the same and the uniformity ofthe scouring action. And this superior action, is obre; tained without requiring more total air consumption than Where the air enters only at one'end, as a result of the fact that only a lmoderate-entry air. pressure or velocity is needed to feed the frequired amount of abrasive into the entrance end'of the machine. This improved construction also overcomes. tendency of the. granular abrasive or grit t0 settle or agglomerate in portions of the scourging-passage.

Instead offprovidingthe air-inlet openings or 'nozzles in the upper plates, they could be provided in both the upper and lower plates, as is illustratedin Fig. 7, which is especially desirable where a wide sheet or plate of metal is to ,be scoured. Thus, referring to Fig. 7, a plurality .pf air-inlet openings or nozzles 32 in the upper plates I I have airV suppliedto them through airinlet pipes 3l, all similar to the constructionof the` corresponding parts illustrated inY Fig. v4.

The lower plates |2q, have air-inlet openings o r nozzles 39 fed with air from air-inlet pipes Ml `leading into the openings 4l inthe base-clamp `vmembers 22a. .illustrated in Fig. '7, the air and abrasive which By means of this construction entersA through the air-andV-abrasive head 34v both above and below the metal sheet 20a, is augmented above and below the sheetfZa by the air entering from the nozzles 32 and 39. to thus simultaneously scour both sides or Afaces Yof the metal sheet 20a. If so desired, the airnozzles could be omitted from the upper plates and only the lower plates could be provided with air-nozzles. If desired, the cross-sectional shape of the scouring-passage I1 may be made with a contour to accommodate various structural shapes such, for example, as angle-irons, channels, or the like.

The invention may be carried out in other specific Ways than those herein set forth with- VVout departing from the spirit Aand essential characteristics of the invention, and the present ernbodiments are, therefore, to be considered in all respects as illustrative and not restrictive, and all changes coming within the meaning and equivalency range of the appended claims are 'f intended to be embraced therein.

I claim:

1.'A scouring-device for metal-scouring machines, having an elongated undulated scouringpassage constructed and arranged to have granularl abrasive introduced into one end of said passage;A said device having openings at a plurality of spaced-apart locations along said passage constructed and arranged to direct gaseous fluid into said passage in a direction generally longitudinal of said passage to repeatedly accelerate the abrasive longitudinally along Vsaid passage to cause the abrasive to be repeatedly deflected against work in said passage; and separate duid-control means for independently controlling .the entry of gaseous fluid at each of said spaced-apart locations, through said openings.

. 2. A scouringedevice -for Vmetal-scouring machines,v having an elongated undulated Vscouring-passage ,constructed and arranged/to have 'Se CHARLES A. DREISBACH. 

